臭氧氧化双酚A的性能及机理

doi:10.12034/j.issn.1009-606X.219165

过程工程学报 ›› 2020, Vol. 20 ›› Issue (2): 230-236.DOI: 10.12034/j.issn.1009-606X.219165

臭氧氧化双酚A的性能及机理

陈娇玉¹，孟冠华^1,2*，魏旺¹，刘宝河¹，丁素云¹，何佳睿¹

1. 安徽工业大学环境工程系，安徽马鞍山 243000 2. 教育部生物膜法水质净化及利用技术工程研究中心，安徽马鞍山 243000

收稿日期:2019-03-11 修回日期:2019-06-27 出版日期:2020-02-22 发布日期:2020-02-19
通讯作者: 陈娇玉 1283442064@qq.com
基金资助:
安徽高校自然科学研究重点项目;2017年度高校优秀骨干青年人才国内外访学研修项目

Performance and mechanism of ozonation of bisphenol A

Jiaoyu CHEN¹, Guanhua MENG ^1,2*, Wang WEI¹, Baohe LIU¹, Suyun DING¹, Jiarui HE¹

1. School of Energy and Environment, Anhui University of Technology, Ma'anshan, Anhui 243000, China 2. Ministry of Education Biofilm Process Water Purification and Utilization Technology Engineering Research Center, Ma'anshan, Anhui 243000, China

Received:2019-03-11 Revised:2019-06-27 Online:2020-02-22 Published:2020-02-19

摘要/Abstract

摘要： 采用臭氧氧化法在动态条件下降解双酚A，考察了臭氧浓度、水样进水流速、pH、双酚A初始浓度及温度对氧化降解双酚A效果的影响，探究了臭氧氧化双酚A的反应机理。结果表明，臭氧对溶于水中的双酚A具有良好的去除效果，在反应条件(臭氧浓度11.04 mg/L、水样进水流速2 mL/min、原水pH=6.83、双酚A初始浓度10 mg/L、温度40℃)下，去除率达86.12%。增加臭氧浓度或适当升高温度可增加臭氧氧化双酚A去除率。pH和进水流速的提高会降低双酚A去除率。偏酸性条件下，臭氧降解双酚A的效果更好。臭氧氧化双酚A反应活化能较低，属于快速反应。臭氧浓度不变，增加双酚A初始浓度会使其去除率减小。臭氧氧化双酚A以臭氧直接氧化为主，同时也存在羟基自由基间接氧化。

关键词: 双酚A, 高级氧化, 臭氧, 反应机理

Abstract: The wide application of bisphenol A (BPA) affects all aspects of human life, and bisphenol A has potential harm to human health. Ozonation has a rapid rate of reaction in the degradation of organic pollutants and no secondary pollution. In this work, the degradation of bisphenol A in aqueous solution by continuous ozone from the ozone generator was studied. The effects of ozone concentration, influent flow rate, pH, initial concentration of bisphenol A and temperature on the ozonation of BPA were investigated. And the reaction mechanism of ozonation of bisphenol A was explored. The results showed that ozonation had a good removal effect on bisphenol A from contaminated water. The conditions for ozonation of bisphenol A were obtained by ozone concentration of 11.04 mg/L, flow rate of 2 mL/min, raw water pH at 6.83, loaded temperature 40℃, initial concentration of bisphenol A 10 mg/L, the removal rate of bisphenol A reached up to 86.12%. Appropriate temperature rise promoted ozone degradation of bisphenol A and increase the removal rate of bisphenol A. The appropriate increase of ozone dosage increased the removal rate of bisphenol A. Ozonation of bisphenol A was a rapid reaction with low activation energy. The increase of pH reduced the removal rate of bisphenol A, and ozone degradation of bisphenol A was better under acidic conditions. The removal rate of bisphenol A decreased with the increase of flow rate. When the ozone dose was constant, the increase of initial concentration of bisphenol A resulted in a decrease of the removal rate of bisphenol A. Tert-butanol inhibited the production of hydroxyl radicals and reduced the removal rate of bisphenol A, but its concentration had little effect on the removal rate of bisphenol A. Ozonatio of bisphenol A was mainly caused by direct oxidation of ozone and there was also indirect oxidation of hydroxyl radicals.

Key words: bisphenol A, advanced oxidation, ozone, reaction mechanism

陈娇玉孟冠华魏旺刘宝河丁素云何佳睿. 臭氧氧化双酚A的性能及机理[J]. 过程工程学报, 2020, 20(2): 230-236.

Jiaoyu CHEN Guanhua MENG Wang WEI Baohe LIU Suyun DING Jiarui HE. Performance and mechanism of ozonation of bisphenol A[J]. Chin. J. Process Eng., 2020, 20(2): 230-236.

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臭氧氧化双酚A的性能及机理

Performance and mechanism of ozonation of bisphenol A

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